Cheapest return flights from Las Vegas to Ontario in January from $83

AirHint found the following cheapest return flights from Las Vegas (LAS) to Ontario (ONT) in January 2026 (see full year).

Return flights

30 Jan - 30 Jan Frontier Airlines direct
29 Jan - 31 Jan Frontier Airlines direct
30 Jan - 01 Feb Frontier Airlines direct
29 Jan - 02 Feb Frontier Airlines direct
31 Jan - 01 Feb Frontier Airlines direct
29 Jan - 01 Feb Frontier Airlines direct
29 Jan - 30 Jan Frontier Airlines direct
27 Jan - 29 Jan Frontier Airlines direct
27 Jan - 30 Jan Frontier Airlines direct
28 Jan - 04 Feb Frontier Airlines direct
28 Jan - 08 Feb Frontier Airlines direct
25 Jan - 01 Feb Frontier Airlines direct
24 Jan - 31 Jan Frontier Airlines direct
25 Jan - 30 Jan Frontier Airlines direct
26 Jan - 31 Jan Frontier Airlines direct
26 Jan - 26 Jan Frontier Airlines
26 Jan - 26 Jan Frontier Airlines direct
27 Jan - 04 Feb Southwest Airlines direct
27 Jan - 04 Feb Southwest Airlines

Also check the deals for one-way flights from Las Vegas to Ontario in January.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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